W90P710_05 Datasheet, PDF (112/526 Pages) Winbond – 16/32-bit ARM microcontroller

W90P710
7.5.2.1. Register Details
CAM Command Register (CAMCMR)
The EMC of W90P710 supports CAM function for destination MAC address recognition. The
CAMCMR control the CAM comparison function, and unicast, multicast, and broadcast packet
reception.
Register
CAMCMR
Address
R/W Description
0xFFF0_3000 R/W CAM Command Register
Reset Value
0x0000_0000
31
30
29
23
22
21
15
14
13
7
6
5
Reserved
28
27
Reserved
20
19
Reserved
12
11
Reserved
4
3
ECMP
CCAM
26
18
10
2
ABP
25
17
9
1
AMP
24
16
8
0
AUP
BITS
[31:5]
[4]
[3]
Reserved
ECMP
CCAM
DESCRIPTIONS
-
The ECMP(Enable CAM Compare) controls the enable of CAM
comparison function for destination MAC address recognition.
If S/W wants to receive a packet with specific destination MAC
address, configures the MAC address into anyone of 16 CAM entries,
then enables that CAM entry and set ECMP to 1.
1’b0: Disable CAM comparison function for destination MAC address
recognition.
1’b1: Enable CAM comparison function for destination MAC address
recognition.
The CCAM(Complement CAM Compare) controls the complement of
the CAM comparison result. If the ECMP and CCAM are both enabled,
the incoming packet with specific destination MAC address configured
in CAM entry will be dropped. And the incoming packet with
destination MAC address doesn’t configured in any CAM entry will be
received.
1’b0: The CAM comparison result doesn’t be complemented.
1’b1: The CAM comparison result will be complemented.
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